Protector motion for looms



y 7, 1935. J. CHAPMAN Em. 2,000,820

PROTECTOR MOTION FOR LOOMS Filed July 10 1955 u llllll] my Patented May 7, 1935 I r s fi l eqia a s. s k I Our invention relates to v:loonri protection fines Micarriedb'y the lay, fithis'rod being ntoimechanism and-dt is an object, @of .:the :s'ame to reduce to-a minimum the movement ofasuchpants :of known types of looms, as thetprotector irodeand @AIlOthEl'iObjBCt ofitheinvention isitoiproviden simple, i'cheap, efiective :mechanism of the icharqiiacteri'described, iwhich'shall operate with-la relatively vlittle use of power, and the use o'f which no :results in a saving in generalwvear and tear ;of the loom, =and particularly in 'suchxparts asshuttles, belts, :picker sticks, :pickerilug straps, :lugs'tick s, pick-bal1s,'-hangers,.etc.'

- InIooms such as :that 'shown' in the accom- 13 pan'ying drawing it has heretoiorebeen. cusrtom'ary to ineludea dagger "whiehrnorma-lly is in position to knock i off the :shipper ihan'd'le in case the Shuttle does not enterithe box. A properly :boxed shuttleareacts on -:the lpartszsin such a way 21) 'as to move the dagger into :an idlelposition', i.=:e., I

out or position of protection, "thus allowing the operation of the floom toj c'ontinue. Assuming now that'; the loom runs :1'7'2p'icks-to the minute, this mea'ns that the dagger and coacting parts $.25 have to oscillate "103,200 times 'in'ten hours, the

daggerland coacting parts being of course opei fated :at each pick According to our invention, the dagger isnortnall y out of' position of protec- *tion and remains stationary during the :normal so -'operation ofthe 1oom,"i.fe., solong as theeshuttle enters -either-boxj but "should the shuttlegfail Ito be properly' bo'xed, then the dagger, accOrding to our invention, will be" moved positively and certainly into the {position;of protection,fso is to the shi per handle andstop {the loom; -Such a movement will veryFrarelyfbe necessary,

' certainly not more than once, a d ay and prob- V undetneath t the :tailfl zof the vtdagger ,23-and it v :will be :seen that when 'theshaft; 21 'is' moved" axially, :thisarm lil willrswingithezdagger about 3 ab'ly not more than once a week, 'instead of kthe continual movements "of the dagger anddagg'er I g40 in previouslyknown devices.

' "Referring-to the "drawing, which-is made a part hereof, and in which similar parts are indicated "similar reference characters:

- 'g. 1--isa transverse section of so-much of a #5" conventional loom as'is necessaryto illustr ateithe operation flour-invention;

Fig. 2,-isa-section online 2-4 of Egg-1 1 Fig.8 isagperspective of parts shown in Figs. 1'and2. g 1 50 .In the drawing certain conventional parts of a loom are'shown, including a portion: ll) of the" fixed frame of the loom, the frog H, the lay, l2,

shuttle boxes l3 and J4, shuttle binders l5 and 16, picker-sticks l1 and I8 and binder springs l9 5,5 and A protector rod "2| i-s joumalled in bear- :vided'zat 'o'ne end withia .dagger fl. The dagger, msiusuabnoacts with 'thezfrog 2H itoistop the .loom when zthe dagger risroperatively positioned, but is znormallysheld tinith'e ,position shown gin zE'ig. 2 55 rhyxme'ans {of zltwo :coil springs insteajdoi :the ausual one spring,"which springs .turntheiprotector rod opposite :to :the 'usual' coilspringlron said irod; llhe protector 10111 .is also provided at ."the :rightshanda'end'with aldagger "26. .i I 410 Adiacent th'e left :hand 'end ofv .the: lay ethereis :Joumaled aishaft'; 2'! in substantially vertical iposition, rthe 1 mounting of said shaft being such 1 fthat ftheishait-rcan oscillate land :can also-slide iiaxilally. =-its .upper:end ithe shaftiis provided i15 with acro'ck farm :28 :eng'aging :ithe ibliider for the Zbindersxiring. i'Atitsilower end theshaft 521 "is s -bentitoaprovide-an arm 1'29 shown as beingpin,

position'rorfengagementbyaeamw,iwhereby tne s shaft 21' will be moved approximately vertlcallyflzo endwise or axially when the arm 29 strikeszthe, camziin'; 7. V "ll'xe namalli-is here.showni=asibeing carried myr 1mm slidable linaa bracket 32.011 therloom frame,

whereby-the anniicanrbeiedjusted:byiloosenlng.its

ibolt 138 so as 'to position the fcam iproperly. The br'acket is pivoted 2113 532? and the height of cam 30 may be' =varied 'hychanging'the position ofa boltfli in amarcuatesslotsfl .in the loomframe.

spi' ing u is connectedatone end to:thebear- .30

ing 86 inswhich' shai'ti'fllisajournalled andziszconnec'ted 'at the othersend to a projecting pin 38 :on

- th'e shaft !1,isaidispring;being2so positioned as "Ito ih'old -the a'rm 29? normally in kpositionito the lifted yby the ango, supo'n the .foitward'amovementof the'lay;1* 7 n v "A ithlfdlflllh illr'onitheshaft 21 is positioned its pivot fl I into position 'to fengage the frog 1:]

"so as to eause 'theloom'toube knockedoff; Such Eproperlylboxedjdue :to the fact thatztheshuttle I iaets through'intermediate connections, including 5 the am 328, to oscillat'ezthe shafts z'l so as to placev itszarm msout Lofitheaway of "the cam' n I I At the right handi'end-of the ilay,ior;adjacent ther'to, there" is @another shaft :42, which, is

mounted for oscillation ina bearing 43. This Ishafti has a rock arm, 44 engaging the shuttle binder at the right hand end of the lay in the;

drawing (or its spring 20). Another arm 46 on shaft is connected by a link -41 to an arm 481 on shaft 21 and through this connection 'it will be seen that a'properly boxed shuttle'at the right hand side of the loom will act through the shaft 42 and link 41 to rock the shaft 21 to place its arm 29 out of the path of cam 30.

The operation of our device may be brieflyrestated as follows: v 7

During the normal operation of the loom when the shuttle enters the box adjacent the magazine side (at the left hand side of Fig. '1) it will act through the binder, binder spring and arm 28 to rock shaft 21 and move its arm 29 to a position where it will not strike the cam 30 as the lay beats up. Similarly, when the shuttle is properly boxed at the right hand orshipper han-' dle side of the 100m it acts through the binder and binder spring and rock arm 44 to oscillate the shaft 42, which through rock arm 46, link 41 and rock arm 48, swings the shaft- 21 against the tension of its spring 34 into inoperative position with reference to cam 30. Should the shuttle not be properly boxed at either end of its path-,the parts above referred to will not be moved, whereupon the arm 29 will ride up on cam 30, moving the shaft 21 axially upward and causing arm :1;0

lift the tail of the dagger, swinging it against the .tensionof springs 25 which normally holdit in idle position, into the operative position, where it engages frog 'II and stopsthe loom..

The invention is here illustrated 'in connection with a loom of theNorthrop type, but it 'willbe obvious that its application is not limited to looms of that type, and it will, also be obvious .that many changes may be'made by those skilled in the art from the device as herein shown and ,described, all without departing from the spirit of theinvention; therefore, we do not limit ourselves, except as indicated in the appended claims. While it is shown as a purely mechanical device it might obviously be operated electrically or otherwise. 1

1. In a loom having a lay, a shuttle binder thereon, a shuttle and-means. for stopping vthe loo-m, the combination of a dagger, means .for holding the dagger stationary in idle position .during the normal operation of the loom,- and means controlled by the binder for moving the dagger. into operative position for stopping the loom when'the shuttle is not'properly boxed, said means including a fixed cam on the 100m frame,

means normally positioned to be engaged by said' cam and to be actuated therebyfor moving the dagger into operative position as the lay beats up, and' means operated by a properly boxed shuttle'to disable said dagger-moving means.-

2. In a loom having a lay, a shuttle binder thereon, a shuttle and" means for stopping the loom, the combination of a pivoted dagger, means for holding the dagger stationary inidle position during the normal operation of the loom, and means controlled by. thebinder for moving the dagger into operative position for. stopping the loom when the shuttle is not properlyboxed, said means comprising :an-arm carried by the lay,

means forlifting said arm to swing the dagger into operative position, and means controlled. by

the binder for disabling said lifting means whenever'the shuttleis properly'boxed. j l 3. In a loom having a lay, a shuttle, binder shaft-moving means.

4. In a loom having a lay, a shuttle binder thereon, a shuttle and means for stopping the loom, the combination of a dagger, means for holding the dagger stationary in idle position during the normal operation of the'loom, and means'controlled by the binder for moving the dagger into operative position for stopping the loom when the shuttle is not properly boxed, said means comprising a shaft mounted for oscillatory and axialmovement, an arm on the shaft below the adjacent end of the dagger, a cam fixed on theframe of the loom, an arm on the shaft for engaging said cam to move the shaft axially and so bring the dagger into operative position when the shuttle is not properly boxed, and means actuated by a properly boxed shuttle for oscillating said shaft to move the second-named arm out of position for engaging said cam.

5. A device as in claim 3, including resilient means for holding said second arm in position to engage said cam.

6. 'In a. loom attachment, a protector rod, a dagger thereon, resilient means for holding the dagger in idle position, means mounted on the .laybutindependentlyof the dagger for moving the dagger toward active position upon the beatup of the-lay, a shuttle feeler, and means actuated through said shuttlefeeler by a properly boxed shuttle for disabling said dagger moving means.

'7. Ina loom attachment, a protector rod, a

dagger thereon, means for normally holding the dagger stationarycin idle position during operation of a loom to which it is attached, a vertically -movab le member, means including a cam adapted to be fixed to a loom frame for actuating said vertically movable member to move the dagger into operative position, a' shuttle feeler, and connections from said shuttle feeler to said vertically movable member for preventing operation thereof if the shuttle is properly boxed.

-8 A device as, in claim '1, including a fixed .bearingon the lay for said vertically movable member.--

r 9. In a loom stop motion, a protector rod, a

dagger thereon, a frog adapted to beengagedby the dagger for stopping the loom, means mount- ;ed on the lay independently of the dagger adapt- 

